linux-kernel - Re: [PATCH v3 0/5] alpha: system call table generation support

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Date:   Wed, 19 Dec 2018 10:59:10 -0500
From:   Matt Turner <mattst88@...il.com>
To:     Firoz Khan <firoz.khan@...aro.org>
Cc:     linux-alpha <linux-alpha@...r.kernel.org>,
        Richard Henderson <rth@...ddle.net>,
        Ivan Kokshaysky <ink@...assic.park.msu.ru>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        y2038 Mailman List <y2038@...ts.linaro.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux-Arch <linux-arch@...r.kernel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Deepa Dinamani <deepa.kernel@...il.com>,
        Marcin Juszkiewicz <marcin.juszkiewicz@...aro.org>
Subject: Re: [PATCH v3 0/5] alpha: system call table generation support

On Fri, Dec 14, 2018 at 10:18 AM Firoz Khan <firoz.khan@...aro.org> wrote:
>
> Hi Folks,
>
> On Tue, 13 Nov 2018 at 15:02, Firoz Khan <firoz.khan@...aro.org> wrote:
> >
> > The purpose of this patch series is, we can easily
> > add/modify/delete system call table support by cha-
> > nging entry in syscall.tbl file instead of manually
> > changing many files. The other goal is to unify the
> > system call table generation support implementation
> > across all the architectures.
> >
> > The system call tables are in different format in
> > all architecture. It will be difficult to manually
> > add, modify or delete the system calls in the resp-
> > ective files manually. To make it easy by keeping a
> > script and which'll generate uapi header file and
> > syscall table file.
> >
> > syscall.tbl contains the list of available system
> > calls along with system call number and correspond-
> > ing entry point. Add a new system call in this arch-
> > itecture will be possible by adding new entry in the
> > syscall.tbl file.
> >
> > Adding a new table entry consisting of:
> >         - System call number.
> >         - ABI.
> >         - System call name.
> >         - Entry point name.
> >
> > ARM, s390 and x86 architecuture does exist the sim-
> > ilar support. I leverage their implementation to
> > come up with a generic solution.
> >
> > I have done the same support for work for ia64, m68k,
> > microblaze, mips, parisc, powerpc, sh, sparc and xtensa.
> > Below mentioned git repository contains more details
> > about the workflow.
> >
> > https://github.com/frzkhn/system_call_table_generator/
> >
> > Finally, this is the ground work to solve the Y2038
> > issue. We need to add two dozen of system calls to
> > solve Y2038 issue. So this patch series will help to
> > add new system calls easily by adding new entry in
> > the syscall.tbl.
> >
> > changes since v2:
> >  - changed from generic-y to generated-y in Kbuild.
> >  - made changes in syscall.tbl for removing entry -
> >    alpha_ni_syscall.
> >
> > changes since v1:
> >  - optimized/updated the syscall table generation
> >    scripts.
> >  - fixed all mixed indentation issues in syscall.tbl.
> >  - added "comments" in syscall.tbl.
> >  - enclosed __NR_sycalls macro with __KERNEL__.
> >  - added missing new line.
> >
> > Firoz Khan (5):
> >   alpha: move __IGNORE* entries to non uapi header
> >   alpha: remove CONFIG_OSF4_COMPAT flag from syscall table
> >   alpha: add __NR_syscalls along with NR_SYSCALLS
> >   alpha: add system call table generation support
> >   alpha: generate uapi header and syscall table header files
>
> Could someone review this patch series and queue it for 4.21
> through alpha tree would be great.

Thank you! I'll take a look.